Results 151 to 160 of about 432,453 (195)

[Pulse wave velocity].

Rinsho byori. The Japanese journal of clinical pathology, 2004
Pulse wave velocity (PWV) reflects arterial stiffness. PWV correlates with other markers reflecting the severity of atherosclerosis such as the findings of ultrasound examination of carotid artery. In addition, several studies demonstrated that increased PWV is a predictor of future cardiovascular events in patients with either hypertension or diabetes
Hirofumi, Tomiyama, Akira, Yamashina
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Velocity‐selective RF pulses in MRI

Magnetic Resonance in Medicine, 2005
AbstractA family of velocity‐selective pulses consisting of a series of RF hard pulses followed by bipolar gradients was designed. The succession of required pulses was deduced using a k‐space approach within a small tip‐angle approximation. Fourier transform of the desired velocity excitation determined the flip‐angle series, and the corresponding ...
Ludovic, de Rochefort, Xavier, Maître, Jacques, Bittoun, Emmanuel, Durand   +3 more
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Velocity Coupling from Pulse-Test Firings

Journal of Propulsion and Power, 2010
There has been much dispute about triggering of non-linear combustion instability(CI). The norm has been to use ad hoc models to include second order combustion terms most notably velocity coupling. This term arose due to classical linear analyses predicting stable motors necessitating another driving function. However there is no practical universally
Rousseau C.W., Knoetze J.H.
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[Pulse wave velocity(PWV)].

Nihon rinsho. Japanese journal of clinical medicine, 2004
Brachial-ankle pulse wave velocity(baPWV) is a noninvasive and simple method of measuring arterial stiffness and an independent predictor of cardiovascular mortality in some lifestyle-related diseases. We evaluated that baPWV is well correlated with many atherosclerotic risk factors including abdominal visceral obesity and HOMA, and that the ...
Sanae, Harada, Kazuo, Takeda
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Pulse Modulation Effect on Velocity Fringes

Applied Optics, 1975
The degradation of a hologram caused by object motion can be utilized to measure the rate of change of the length of an object beam. A rectangular shaped laser pulse is ordinarily used to illuminate the object in such an investigation. The velocity fringes obtained are considered in the calculation.
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Dispersive pulse dynamics and associated pulse velocity measures

Journal of Optics A: Pure and Applied Optics, 2002
The classical theory of dispersive signal propagation by Sommerfeld and Brillouin proposed in 1914 provided the first proof within the classical Maxwell–Lorentz theory that an electromagnetic signal could not propagate faster than the vacuum speed of light in a causal dielectric, also introducing the signal velocity and the precursor fields (or ...
Kurt Edmund Oughstun, Natalie Anne Cartwright   +1 more
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Pulse Wave Velocity Techniques

2019
Recently, pulse wave velocity (PWV), or its reciprocal pulse transit time (PTT), has been intensively investigated as a promising technique for continuous, cuffless, and noninvasive blood pressure (BP) monitoring. BP is mathematically derived through PTT, or the “time delay” in propagation of pressure waves in the vascular system, which can be easily ...
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Arterial pulse wave velocity

2003
The pulse wave generated by the left ventricular myocardium contraction and blood ejection is propagated throughout the arterial tree at a speed determined by the elastic and geometric properties of arterial wall and the blood density. This velocity along the aorta or along the arteries of the forearm can be measured by using two ultrasound or strain ...
Yildiz M., Gül Ç., Kürüm T.
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Pulse Wave Velocity Measurement with Velocity Vector Imaging

2013
Pulse-wave velocity (PWV) is typically used for estimating the stiffness of arteries This study was to implement a new method and rapid two-dimensional ultrasound method for the measurement of PWV in the carotid artery. The longitudinal dynamic image of CCA was analyzed using syngo Velocity Vector Imaging technology.
Cun Liu, Qigang Zhu, Yanling Zheng, Yuanliu He, Hongxia Xu, Juan Su, Lili Zhang, Xiaohong Zhou, Zhe Ma, Changchun Liu   +9 more
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Wearable Pressure Sensors for Pulse Wave Monitoring

Advanced Materials, 2022
Ardo Nashalian, Sophia Shen, Jun Chen
exaly